diff options
Diffstat (limited to 'drivers/dma/acpi-dma.c')
| -rw-r--r-- | drivers/dma/acpi-dma.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/dma/acpi-dma.c b/drivers/dma/acpi-dma.c index 8d99c84361cb..22ec10c71d81 100644 --- a/drivers/dma/acpi-dma.c +++ b/drivers/dma/acpi-dma.c @@ -72,10 +72,14 @@ static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp, si = (const struct acpi_csrt_shared_info *)&grp[1]; - /* Match device by MMIO and IRQ */ + /* Match device by MMIO */ if (si->mmio_base_low != lower_32_bits(mem) || - si->mmio_base_high != upper_32_bits(mem) || - si->gsi_interrupt != irq) + si->mmio_base_high != upper_32_bits(mem)) + return 0; + + /* Match device by Linux vIRQ */ + ret = acpi_register_gsi(NULL, si->gsi_interrupt, si->interrupt_mode, si->interrupt_polarity); + if (ret != irq) return 0; dev_dbg(&adev->dev, "matches with %.4s%04X (rev %u)\n", |